.panel
  position relative
  padding 10px
  text-shadow 0 -1px 0 rgba(0, 0, 0, .12)
  border 1px solid #40a9ff
  border-radius 4px
  box-shadow 0 2px 0 rgba(0, 0, 0, .015)
  box-sizing(content-box)

  & + &
    margin-top 10px
